Machine for enveloping a metal core in a plastic body.



PATENTED APR. 16, 1,907.

W. POPPENDIEOK. i MACHINE FOR BNVELOPING A METAL GORE IN AFPLASTIG BODY.

APPLICATION FILED AUG. 3, 1905.

5 SHEETS-SHEET 1.

PATENTED APR. 16, 1907.

Not 850. 780.

W. POPPENDIEGK. MACHINE FOR ENVELOPING A METAL GORE IN A PLASTIC BODY.

APPLICATION FILED AUG. 3, 1905.

5 SHEETS-SHEET 2.

PATE'NTED APR. 16, 1907.

W. POPPENDIEOK. v MACHINE FOR ENVELOPINGA METAL GORE IN A PLASTIC BODY.

APPLICATION FILED AUG. 3, 1905.

5 SHEETSSHEET a 4 4 I l l l I4 wi bmao 0% PATE'NTED APR. 16, 1907.

I W. POPPENDIBOK. MAGHINBFOR ENVELOPING A METAL GORE IN A PLASTIC BODY.

APPLICATION FILED AUG. 3 1905.

5 SHEETS-SHEET 4.

PATENTED APR. 16, 1907.

W. POPPENDIBCK.

APPLICATION FILED AUG. 3, 1905.

5 SHEETS-S11E31 5.

j pawvcnljo I MACHINE FOR ENVBLOPING A METAL GORE IN A PLASTIC BODY.

- mounted gear H, which, meshing with gear 1 UNITED STATES PATENT or rron WILLIAM POPPENDIEOK, OF CARLSTADT, NEW JERSEY.

MACHINE FOR ENVELOPING A METAL CORE IN A PLASTIC BODY.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed August 3, 1905. Serial No. 272,546.

To all]. whom it may concern:

Be it known that 1, WILLIAM POPPEN- DIECK, a citizen of the United States of America, residing at Carlstadt, county of Bergen, State of New Jersey, have invented a certain new and useful Machine for Enveloping a Metal Core in a Plastic Body, of which thel'following is a specification, reference be;

ing had to the accompanying drawings, forming a part hereof.

My invention relates generally to an appa ratus for covering a metal core with plastic material, so that the metal. core gives strength to the plastic material.

My invention consists, essentially, in cutting into suitable lengths fiat pieces of plastic material, such as celluloid, which under heat and pressure is shaped about a core of inetal, uniting the plastic material and forming'the same into a straight bar tapered at the ends and suitable for shaping into the formof a hair-pin or like article.

The object of my invention is ther'apid and cheap manufacture by a machine substantially automatic in operation of plastic bodies with metal cores which are suitable for shaping into hair-pins and like articles;

of reference designate corresponding parts" throughout the several views.

Figure 1 shows a vertical side view of machine with the supporting-frame removed. Fig. 2 is the front View of Fig. 1. Fig. 3 is a vertical side view showing driving mechanism, and Fig. 4 is a front view of Fig. 3. Fig. 5 shows vertical section of metal-core-feed mechanism, and Fig. 6 is front view of Fig. 5. Figs. 7, 8, 9, 10,11, 12,13,14,'15,16,17,and 18 show details hereinafterexplained.

Figs. 1 and 2 show heated cutter-plate a, which may be heated by a gas or similar burner, (indicated below the plate in Fig. 1,) the cutter b, and forming-punch c, that are operated. by the eccentrics A A B, all mounted on shaft C; the drum D, which has an intermittent motion on shaft E and having on its face sets of forming-jaws d (1.

Figs. 3 and 4 show driving mechanism, in which G is the driving-shaft, on which is core at a time.

1, forms an intermittent gear of the wellknown Geneva stop-motion type. Gear I is mounted on shaft K, and which in turn drives pinion J, which is also on shaft K. Pinion J' meshes with drum-gear L, mounted on drum shaft E. By the intermittent gear H and I the drum D receives its intermittent motion.

Figs. 3 and 4 show gear M mounted on shaft G and meshing with corresponding gear N,

mounted on shaft 0, on whichare the eccentrics A A B. 0 represents part of frame.

The cutter b, Figs. 1 and 2, is hollow, so

as to permit the,forming-puncl1 a to operateas a slide and is housed at both ends in guides 0, Figs. 3 and 4.

The forming-punch 0, Figs. 1 and 2, operating within cutter b, has screw rods w w swiveled at its ends by means of wrist-pins y y., which, with nuts 2; 1;, respectively, and screw-rods a: m, respectively, connect eccentrics A A mounted on shaft C and form turnbuckle adjustments.

By the turnbuckles, composed of screwrods to w, swiveled at their ends by wrist- I. I p ns 3 y screw-rods x m and nuts 12 v the form ng-punch is adjustable vertically.

The stop'T is adjustable horizontally, so as to be moved nearerto or away from the cutter, thereby permitting of a larger or smaller piece of plastic material being cut off, as may be desired.

Figs. 5, 6, 7, and 8 show'details of metalcore feed. Into hopper Q are placed metal cores of the desired length and diameter. At the lower end of the hopper is an opening through which the metal cores pass by gravity. Under the opening is a drum i, which has in it a groove y',.running its entire length and of a size 's'uflicient to receive one metal About the drum i is a case to keep the metal core in a groove during the revolution of the drum. Drum i is driven by means of a chain or other suitable device from shaft 0 and so timed. that the drum dis- F orming-jaw d charges the metal core held by it into the elongated end of the case when the formingjaws d. d holding a partly-formed tube, are i beneath it, and by gravity the metal core l moves to point k, where a plunger Z, operated by lever m, Fig. 5, fulcrumed at point 1 n and operated by cam 0, forces the metal core into the partly-formed tube at point 2),

Fig. 8.

Figs. 9,10, and 11 show details of formingjaws d d and their operating mechanism.

is stationary, while formingjaw d is fastened to the slide 1" and by means of the set-screw k can be adjusted so that the two forming-jaws may be set nearer together or farther apart, so as to permit the formingjaws to receive material of different diameter or to increase the pressure on the material, as may be desired. A headed pin 8 passes through a hole in finger e in such a manner that the head of pin 8 formsa stop against finger e. At one end pin 8 is fastened to sliding piece r, so that when finger 'c is moved back against the head of pin 8 the slide 1' is pulled back, which in turn pulls back jaw d, thereby opening the forming-jaws. To close forming-jaws, set-screw h is moved forward against sliding piece 1", which bears jaw d, by

the finger 'e, which is moved by lever g, which is fulcrumed on shaft f and lever g is operated by the stationary cam F, so that at the highest point in the cam the jaw d is closed against jaw d and is kept closed during a period that the drum D is revolving, and jaw dis opened by the stationary cam P during the remaining time that drum D is revolving. Each set of forming-jaws on drum D has similar operating mechanism attached to them and adapted to be operated in the same way, as

herein particularly described.

Figs. 12,13,14=,15,16,17,18 show the different steps of forming the plastic substance about the metal core. Fig. 12 showsa flat sheet of plastic material q lying on the cutter-plate a, that is heated by a gas-flame, Fig. 1. Fig. 13 shows the cutter I) having passed through the plastic material and the part out off forced down by the cutter 1) until it comes to the jaws d d. Fig. 14 shows formingpunch c forcing the plastic material into the jaws d (1, so as to make apartly-formed tube in the shape of a U. Fig. 15 shows the metal .core deposited in the partly-formed tube.

Fig. 16 shows jaws d (1 closed and the surplus plastic material protruding. Fig. 17 shows jaws closed and surplus plastic material removed. Fig. 18 shows the finished product of plastic material with a metal core.

The operation of the machine is as follows: With the machine put in motion the operator places on cutter-plate a a sheet of plastic material and pushes the same under. the cutter 1) to the adjustable stop t. The cutter j descends and cuts ofi a strip of the material j and forces the strip thus out ofi down toward completed product is the forming-jaws d d. Just as the strip comes into contact with the upper flat side of the formingjaws,.which at that point are open, the forming-punch c descends and forces the plastic material into the formingjaws, and upon the withdrawal of punch c the plastic material is left in the formingjaws in the form of a U, its upper flat edges resting on the jaws and holding it in proper position, as indicated. The forming-punch and the cutter withdrawing from the forming-jaws permit the operator to push the sheet of plastic material under the cutter to stop If again, and while this, operation is being repeated the forming-jaws, holding the partly-formed U-shap as drum D revolves intermittently in the direction of the arrow, and empty formingjaws come into position under the cutter and forming-punch, and the operation of cutting off a strip is repeated. While the subsequent piece of plastic material is being cut off and formed in the forming-jaws a metal core is being forced by the metal-core plun- 'ger Z, Fig. 8, into the partly-formed tube at point p. There is now in the machine one partly-formed tube with a metal core in it and a partly-formed plastic tube in the form of a U. The drum now revolves another space, and as it moves lever g, passing-over the cam F, forces the forming-jaws together so as to close about the plastic material holding the metal core. lhe second partlyiormed U-shaped tube is advanced to receive a metal core, and a third set of formingjaws is receivim a portion of plastic mate rial After the forming-jaws are closed they are kept closed by cam F until the formingjaws with a completely-formed tube that contains a metal core reaches the lowest point in the revolution of drum, D, when the forming-jaws are opened by lever g passing off of cam F and into cam P, Fig. 11, and the;

discharged into a receptacle conveniently laced for that purpose. 'l-he first set of 'orming-jaws. are new empty and open and ascend under the cutter and forming-punch to receive another strip of plastic material. Each successive set of forming-jaws on drum D is filled and operated the same way herein described, and the operation is repeated continuously.

I claimas my invention and desire to secure by Letters Patent- 1. In hair-pin machines, an intermittently rotating drum, formin -jaws mounted on said drum, means to relatively move cooperating forming-jaws, a heated cutterplate and stop cooperating with said jaws, amovable cutter and forming-punch cooperating with said cutter-plate to sever'a sheet of heated plastic material and force'the same within said forming-jaws, metal-core-feeding means to cooperate with said forming-jaws at another station to feed a metal core within ed tube, moves a space said material inserted in said jaws, said jaws thereafter closing to force said covering material around said core and sever the excess of said material, said jaws remaining in closed position until said material has set.

.2. In hair-pin machines, an intermit te'ntly-rotating drum, series of forming-jaws on said drum, means to relatively move cooperating jaws as said drum rotates, a heated cutter-plate, means to sever a sheet of plastic material and force the same within a set of cooperating jaws and means cooperating with said jaws at another station to feed a metal core within said material, said jaws thereupon closing to force said material around said core and sever the excess of said material.

3. In hair-pin machines, an intermittently-rotating drum, series of cooperating jaws on said drum, means to relatively move said cooperating jaws, means to feed a curved sheet 01. plastic material between said jaws, means to feed a metal core within said material to be inclosed thereby.

4. In hair-pin machines, an intermittentlyrotating drum, series of cooperating formingjaws mounted on said drum, means to feed a sheet of plastic material in curved form into said aws, means to feed a core of less length .than said sheet within the same in said aws,

means to close said. jaws to com )letely inclose said core within said 'na-terial and sever the excess of said material.

5. In hair-pinmachines, an intermittentlyrotating drum, a series of cooperating forming-jaws on said drum, means to feed plastic material within said forming-jaws, means to feed a core within said jaws and means to close said jaws to cause said material to inclose said core. 6. In hair-pin machines, cooperating forming-jaws, automatic. meansto feed plastic material and a core to said forming-jaws and means to close said jaws to cause said material to inclose said core.

7. In hair-pin machines, a movable sup-- port cooperating IOI'llllIlg-JZLWS on said support, means to feed plastic material within said forming-jaws, means to feed a core with in said forming-jaws and means to close said jaws to cause said material to envelop said core.

8. ln hair-pin machines, cooperatingforming-jaws, means to feed a curved strip of plastic n'iaterial within said forming-jaws, means to feed a core of less length than said strip within said strip and means to close said jaws to cause said material to c mpletel v envelop said core and to sever the excess of plastic material.

t). ln hair-pin machines, cooperatingt'orming-jaws, means: to feed a strip oi heated plustie material in curved form within said jaws, means to feed a core within said material and automatic means to close said jaws to cause said material to engage said core and envelop an end of the same.

10, In hair-pin machines, cot'iperating forming means, means to feed a portion of plastic material and automatic means to feed a core within said forming means and means to operate said forming means to bring said plastic material and core into engagement and cause said material to envelop an end of said core.

11. In hair-pin machines, cooperating forming means, means to feed within said 'forming means a strip of plastic material .in

curved form to receive a core and means for operating said forming means to bring said plastic material into engagement with said core.

12. In apparatus for making hair-pins, a platen and a pair of relatively movable forming-dies thereon, normally held in separated position, in combination with a formingpunch adapted to enter between said dies to force the work ther'ebetween and automatic means including a rotatingmember for moving the dies into engagement to compress said work.

13. Apparatus for making wire-core hairpins, com )rising a pair of relatively movable forming-d ies, adapted to support a strip of sheet material over the gap between them when in open position, in combination with a forming-punch and means for moving the same into said gap to bend the strip into V shape to receive the core, and automatic means including a rotatingmember for closing said forming-dies upon the bent strip.

14. Apparatus for making wire-core hairpins comprising a pair of relatively movable torming-t ies and a gage for holding a strip of covering material over the gap between said dies, in combination with a. forming-punch adapted to cooperate with said dies to crease the strip longitudinally, and automatic means including a rotating member for closing said forming-dies upon said creased-strip.

15. In hair-pin machines, a rotating drum, cooperating forming jaws carried by the l drum, automatic. means to "feed plastic mate rial and a core to said forming-jaws. and means to close said jaws to cause said material to int-lose said core.

In testimony whereof I alli'x my signature, in the presence of two witnesses. this id day of August, 1905.

WILLIAM POPPICXDlICtK.

\Yitnesses:

WILLIAM It. Saxronn. A. l). STANLEY. 

